Investigating the inclusive transverse spectra in high-energy pppp collisions in the context of geometric scaling framework

The presence of geometric scaling within the $p_T$ spectra of produced hadrons at high energy $pp$ collisions using small-$x$ $k_T$-factorization is investigated. It is proposed a phenomenological parameterization for the unintegrated gluon distribution in the scaling range which reproduces the features of the differential cross section both in the saturated and dilute perturbative QCD regimes. As the saturation scale acts as an effective regulator of the infrared region (IR), the extension of the model to quantities usually associated to soft physics is studied. The approach is applied to compute the average $p_T$ and the rapidity distribution of produced gluons at high energies.Comment: 11 pages, 9 figure

Estimations for the Single Diffractive production of the Higgs boson at the Tevatron and the LHC

The single diffractive production of the standard model Higgs boson is computed using the diffractive factorization formalism, taking into account a parametrization for the Pomeron structure function provided by the H1 Collaboration. We compute the cross sections at next-to-leading order accuracy for the gluon fusion process, which includes QCD and electroweak corrections. The gap survival probability ($$) is also introduced to account for the rescattering corrections due to spectator particles present in the interaction, and to this end we compare two different models for the survival factor. The diffractive ratios are predicted for proton-proton collisions at the Tevatron and the LHC for the Higgs boson mass of $M_H$ = 120 GeV. Therefore, our results provide updated estimations for the diffractive ratios of the single diffractive production of the Higgs boson in the Tevatron and LHC kinematical regimes.Comment: 20 pages, 6 figures, 3 table

markovMSM: An R Package for Checking the Markov Condition in Multi-State Survival Data

Multi-state models can be used to describe processes in which an individual moves through a finite number of states in continuous time. These models allow a detailed view of the evolution or recovery of the process and can be used to study the effect of a vector of explanatory variables on the transition intensities or to obtain prediction probabilities of future events after a given event history. In both cases, before using these models, we have to evaluate whether the Markov assumption is tenable. This paper introduces the markovMSM package, a software application for R, which considers tests of the Markov assumption that are applicable to general multi-state models. Three approaches using existing methodology are considered: a simple method based on including covariates depending on the history; methods based on measuring the discrepancy of the non-Markov estimators of the transition probabilities to the Markovian Aalen-Johansen estimators; and, finally, methods that were developed by considering summaries from families of log-rank statistics where individuals are grouped by the state occupied by the process at a particular time point. The main functionalities of the markovMSM package are illustrated using real data examples.This research was financed by Portuguese Funds through FCT - "Fundação para a Ciência e a Tecnologia", within Projects projects UIDB/00013/2020, UIDP/00013/2020 and the research grant PD/BD/142887/2018

The N-Vortex Problem on a Symmetric Ellipsoid: A Perturbation Approach

We consider the N-vortex problem on a ellipsoid of revolution. Applying standard techniques of classical perturbation theory we construct a sequence of conformal transformations from the ellipsoid into the complex plane. Using these transformations the equations of motion for the N-vortex problem on the ellipsoid are written as a formal series on the eccentricity of the ellipsoid's generating ellipse. First order equations are obtained explicitly. We show numerically that the truncated first order system for the three-vortices system on the symmetric ellipsoid is non-integrable.Comment: 14 pages, 1 figur

Braquiária pode substiuir "grade" do plantio direto no cerrado.

bitstream/item/48131/1/12.pdfSIDE 012/08A - Agrosoft, out. 2008; SIDE 012/08B - Dourados News, 22 out. 2008; SIDE 012/08C - A Tribuna, 25 out. 2008; SIDE 012/08D - Dourados Agora, 21 out. 2008; SIDE 012/08E - Campo Grande News, 21 out. 2008; SIDE 012/08F - Hoje MS, 21 out. 2008; SIDE 012/08G - Página 20, 26 out. 2008

Integração lavoura-pecuária-floresta. 1. Estruturação dos sistemas de integração lavoura-pecuária.

Sistemas de Produção; Sistemas de integração lavoura-pecuária; Pastagens anuais em sucessão às culturas de verão; Rotação de pastagem em áreas de lavoura; Rotação de culturas anuais em áreas de pastagens; ILP com rotação parcial de lavoura ou pecuária; ILP na agricultura familiar; Sistema integrado de produção; Investimentos necessários: estruturais, animais, adequações do solo , cercas, aguadas, máquinas e equipamentos, unidade de manejo, identificação dos animais,necessidade de pessoal e conhecimento; Oportunidades proporcionadas pela iLP; Da pecuária para a lavoura; Da lavoura para a pecuária; Consequência da interação entre ambas, Para o produtor.bitstream/item/58600/1/DOC2011110.pd